Art Deco Platinum Diamond Navette Ring with Sapphires

An Art Deco platinum navette ring, set with a marquise diamond in the center. Single-cut diamonds and calibré-cut sapphires accent the ring. Circa 1920. 

• Diamonds:  0.25 total carat weight 
• Diamonds:  0.65 total carat weight, H-J color, VS1-SI1 clarity 
• Size:  5 3/4 inches, sizable